Developer Builds Free Adaptive IQ Test Using ML and Next.js 14

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A developer built and launched IQ Platform, a free adaptive cognitive assessment tool, after growing frustrated with the static nature of most online IQ tests. Unlike standard tests that present identical questions to all users, the platform calibrates question difficulty based on a user's age, education level, and occupation. It covers six cognitive domains — numerical, verbal, pattern, logical, memory, and spatial — with questions rated on a difficulty scale from 1 to 5. Scoring is handled by a custom machine learning regression model built without external ML libraries, running entirely on the client side with no backend or database. Session history is stored via localStorage, preventing users from encountering repeated questions across multiple attempts.

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